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$107+ Cheap flights from Medford to Ontario (MFR - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
MFR — ONT
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Medford to Ontario

Cheapest flights from Medford to Ontario
Explore the most affordable flight options available from Medford to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:03 pmMFR - ONT
1 stop12h 47mAlaska Airlines
Mon 1/57:19 pmONT - MFR
1 stop17h 29mAlaska Airlines
Deal found 12/11$316
This Alaska Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:37 pmMFR - ONT
1 stop7h 26mAlaska Airlines
Sun 1/186:00 amONT - MFR
1 stop6h 43mAlaska Airlines
Deal found 12/10$375
This Delta deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:40 amMFR - ONT
2 stops12h 18mDelta
Sun 1/187:30 amONT - MFR
1 stop5h 58mDelta
Deal found 12/10$381
This Delta deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:36 pmMFR - ONT
2 stops9h 57mDelta
Thu 1/16:38 amONT - MFR
1 stop14h 36mDelta
Deal found 12/9$395
This Alaska Airlines deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:39 pmMFR - ONT
1 stop4h 32mAlaska Airlines
Thu 1/17:00 amONT - MFR
1 stop4h 59mAlaska Airlines
Deal found 12/9$427
This Delta deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:00 amMFR - ONT
1 stop7h 34mDelta
Thu 12/256:38 amONT - MFR
1 stop6h 16mDelta
Deal found 12/11$436
This Delta deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:36 pmMFR - ONT
2 stops9h 57mDelta
Wed 12/316:00 amONT - MFR
1 stop5h 55mDelta
Deal found 12/9$443
This Delta deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 amMFR - ONT
1 stop5h 13mDelta
Thu 1/16:38 amONT - MFR
1 stop14h 36mDelta
Deal found 12/9$455
This Alaska Airlines deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:39 pmMFR - ONT
1 stop4h 32mAlaska Airlines
Wed 12/317:00 amONT - MFR
1 stop4h 59mAlaska Airlines
Deal found 12/9$466

Find flight deals from Medford to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Medford (MFR) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$187
(Alaska Airlines)

One-way from

$107
(Trip.com)

Popular in

April

Cheapest in

November

Average price

$433
Provider with most accurate pricing for Medford-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Medford-Ontario flights.
Search Deals
From Medford to Ontario
Search Deals
One-way flight from Medford to Ontario
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Medford to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from Medford to Ontario that are best for you.

Fly from

Medford

Fly to

Ontario

Route

Depart

Return

Price

MedfordOntario

MFR - ONT

MFRONT

Medford

Thu 1/8

5:20 pm-10:51 pm

1 stop5h 31m

Ontario

Thu 1/15

3:30 pm-10:59 pm

1 stop7h 29m

$187

MedfordOntario

MFR - ONT

MFRONT

Medford

Mon 1/19

5:42 pm-8:36 pm

1 stop26h 54m

Ontario

Fri 1/30

4:03 pm-5:02 pm

1 stop24h 59m

$187

MedfordOntario

MFR - ONT

MFRONT

Medford

Wed 1/7

6:05 am-1:56 pm

1 stop7h 51m

Ontario

Wed 1/14

3:30 pm-10:59 pm

1 stop7h 29m

$187

MedfordOntario

MFR - ONT

MFRONT

Medford

Tue 1/27

5:42 am-3:08 pm

1 stop9h 26m

Ontario

Sat 1/31

4:03 pm-11:56 pm

1 stop7h 53m

$187

MedfordOntario

MFR - ONT

MFRONT

Medford

Tue 1/13

1:22 pm-8:36 pm

1 stop7h 14m

Ontario

Thu 1/15

11:53 am-5:02 pm

1 stop5h 09m

$216

MedfordOntario

MFR - ONT

MFRONT

Medford

Mon 3/16

5:44 pm-11:32 pm

1 stop5h 48m

Ontario

Fri 3/20

11:30 am-2:59 pm

1 stop27h 29m

$242

MedfordOntario

MFR - ONT

MFRONT

Medford

Tue 2/24

5:44 pm-11:08 am

1 stop17h 24m

Ontario

Fri 2/27

6:08 pm-3:53 pm

1 stop21h 45m

$244

MedfordOntario

MFR - ONT

MFRONT

Medford

Sun 1/4

9:39 pm-9:17 pm

1 stop23h 38m

$107

MedfordOntario

MFR - ONT

MFRONT

Medford

Sun 1/11

12:39 pm-5:03 pm

1 stop4h 24m

$108

MedfordOntario

MFR - ONT

MFRONT

Medford

Sat 1/10

3:45 pm-8:10 pm

1 stop4h 25m

$108

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 16 results
1
2

Compare providers for flights from Medford to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Medford to Ontario in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Medford-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Medford-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Medford-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Medford-Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Medford-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Medford to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Medford with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Medford to Ontario

What is the cheapest month to book a flight from Medford to Ontario?

Currently, July is the cheapest month in which you can book a flight from Medford to Ontario (average of $61). Flying from Medford to Ontario in December is currently the most expensive (average of $177). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MFR to ONT?

Find hourly flight availability from Medford to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

One of the essential ways to save on airfare from Medford to Ontario is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 63% on airfare.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated December 12, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Medford to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,429 reviews

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,429 reviews
Alaska Airlines
8.0
Very good
11,429 reviews

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,429 reviews

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
9,095 reviews
Alaska Airlines
8.0
Very good
11,429 reviews

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Medford to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Medford to Ontario?

    For as low as $187, Delta can have you in Ontario from Medford in 5h 31m. Airlines will cover a distance of 641 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Medford to Ontario round-trip?

    Our cheapest airline available from Medford to Ontario is Delta. Our recent data shows that you can find tickets from as low as $218 on this airline. Additional options worth looking into are Alaska Airlines and United Airlines, starting at $237 and $242 round-trip. These flights start at 39% lower than the current average price 3 months from now.

  • Can I find deals for flights from Medford to Ontario that include hotel bookings?

    Yes. In addition to deals on Medford to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Medford to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Medford to Ontario.

  • Can I find deals for business class flights from Medford to Ontario?

    Yes. Cheapflights offers flight deals from Medford to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Medford to Ontario?

    Currently, July is the cheapest month in which you can book a flight from Medford to Ontario (average of $61). Flying from Medford to Ontario in December is currently the most expensive (average of $177). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 3 airlines flying from Medford to Ontario

Discover the top 3 airlines that operate flights from Medford to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$218Average$346FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$237Average$327FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$242Average$361FlexibilityNo cancel feeOn-time69%

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